thanks Adrian,
the safety factor is my main concern, tho i wasn,t thinking of using the rubber ring as like you say it is rather large for the tunnel,
some fellow kit car owner has suggested that i cut the splined end off the current prop & friction fit it into the larger tube that has the diff flange & weld it up once all is true, tho if i still need a coupling at both ends i could cut/shut the two parts(pipe) & then sleeve the joint, hmmmmm
Dogwood...... do you have a photo of your installed prop please, pref showing the gearbox end & the joint you made to fabricate it please?
thanks
andy